Apparatus for mining



- Re. 17,109 F. B. MILLER APPARATUS 5 FOR IINING Original Filed July 31,1926 10 Sheets-Sheet 1 F. BLMILLER APPARATUS FOR IINIHG- 1o Sheets-Sheet2 Original Filed July 31, 1926 IQweQQ/ZOT: FQEDEE/CK 5. M/LLEE,

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" F. B. MILLER APPARATUS FOR MINING Original Fild July 51, 1926 10Sheets-Sheet 7 FEEDEe/CK 5. Mamas,

Re. 17,109 F. a. MILLER APPARATUS FOR HIKING Oct. 2'3, 192:;

Original Filed July 31, 1926 10 Sheets-Sheet 8 I I I l l I l l l I LI 1l1 1 44 rill/4'4 fiaventar: d? MW fasp e/ck 5. /7/LLEE N. MK. MN QM. OH. U U U U .U D O D D D U U U D 1 Q D D U U U U U D |llI\\\n\H\\H D U UU U D U U Q v O Oct. 23, 1928.

F. B. MILLER APPARATUS FOR IINING 1D Sheets-Sheet 9 Original Filed July31, 1926 IQwQnZoT: fkz-aae/az 5. MLLEE,

k\\\\\\ i\ \x Reissued Oct. 23, 1928.

UNITED STATES FREDERICK 3B. MILLER, or scom'rnuin, PENNSYLVANIA.

APPARATUS FOR MINING.

Original No. 1,648,090, dated September 20, 1927, Serial No. 126,260,filed July 31, 1926. Application for reissue filed September 1,

This invention relates to a machine for longwall mining, and moreparticularly to a machine adapted for use in areas having acomparatively poor roof.

One of the objects of the present inven tion is to provide an apparatuscapable of carryin out a method of mining in which the roof is amplysupported and in which two lon wall faces are alternately advanced sothat the apparatus may be repositioned on one face while the other faceis being Worked,

thus providing a constant supply of mined coal.

' Another object is to provide a novel form of mining machine which willundercut,

break down, trim the face and load the coal.

Another object is to provide a mining ma chine having a novelthree-point suspension or support, two of which are on the'longwall faceconveyer, whereby the machine is guided,

and advancing of the machine is facilitated.

Other and various objects and advantages will be apparent from thefollowing specification and claims.

In the drawings:

Figure 1 is a plan view of an area of coal developed by the practice ofthe present method.

Figure 2 is a plan View of the machine used 3.0 in carrying out theimproved method.

' Figure 3 is a side elevation thereof taken on the line III--III ofFigure 2.

Figure 4 is a sectional elevation taken on the line IVIV of Figure 2.

Figure 5 is a similar view taken on the line VV of Figure 2.

Figure- 6 is a sectional plan taken on the line VIVI of Figure 3.

Figure 7 is a transverse sectional elevation taken on the line VII-VIIof Figure 2.

Figure 8 is a transverse sectional elevation taken on the line VIII-VIIIof Figure 6.

Figures 9 and 10 are fragmentary detail elevations showing the conveyerdrive gear- 111".

' Figure 11 is a fragmentary enlarged plan showing the auger and pickingbar next to the auger.

' Figure 12 is a sectional elevation through 0 the picking bar of Figure11 taken on the line Xl'L-XII.

Referring more particularly to Figure 1 of the drawings, a haulageway orheading 2 is first cut through the area to be mined.

Transverse headings 3 and 4 extending at 1928. Serial No. 303,589.

its center. The headings 5 and 6 are spaced apart to leave a safetybarrier 7 of coal there-'- between. A second haulageway and workingspace heading 8 is then cut along the rear side of the area to be minedand extends parallel to the heading 2. The headings 3 and 4, and 5 and,6 communicate at their opposite ends with the headings 2 and 8 formingconnecting headings, and the combination of headings leaves twosub-areas l0 and 11 to be mined by the novel longwall method of thisapplication.

Heading conveyers 12 and 13 of any standard type are provided in theheadings 4 and 5, respectively, to convey the mined coal from theheading or space 8 forwardly into the heading 2 where it may bedischarged into suitable cars B for transportation out of the mine.

The rear faces of the sub-areas 10 and 11 form longwall faces 14 and 15,respectively, which are to be mined. Drag conveyers 16 and 17 aremounted in the spaces 8 and extend parallel with the longwall faces 14and 15, respectively. The conveyers 16 and 17 have channel beam basemembers 18 of rigid construction, and are adapted to be moved upwardlytoward the longwall faces as the mining progresses.

A plurality of movable roof supporting cribs 19 are arranged along therear side of the headings or spaces 8 and are adapted to support theroof and to be moved forwardly as the mining progresses.

Mining machines A, to be described, are p0- sitioned along the left sidefaces of the subareas 10 and 11 and are mountedto travel on the dragconveyers 16 and 17, respectively, in a direction parallel to thelongwall faces 14 and 15. The machines A are adapted to undercut, breakdown and load the coal being mined onto the conveyers 16 and 17.

In carrying out the method, the mining machine A is positioned along theleft end face of the sub-area 10, is first started across the longwallface 14 and mines a short end face along the entire longwall face. Asthe coal is mined the machine loads it onto the drag conveyer 16, whichin turn conveys it along the space 8 and delivers it onto the conveyer13, and this last named conveyer delivers the coal into the cars B inthe heading 2. After the machine A has made a complete out along thelongwall face 14, it will be returned to the left-hand end face of thesub-area and repositioned for a successive cut, the dra conveyer 16 andmachine being advance and the roof cribs 19 being advanced to supportthe roof adjacent the longwall face while permitting the formation of agob in the mined out area.

As soon as the machine A has finished a complete out along the longwallface 14, a second machine A, which is positioned along the left end faceof the sub-area 11, is started and mines a short end face along theentire longwall face 15, while the first machine A and associated aparatus is being repositioned. The seconrf machine A loads the coal minedfrom the ion wall face onto the drag conveyer 17, w ich in turn conveysit along the heading or space 8 and delivers it onto the conveyer 12which delivers it into the cars B in the heading 2. After the secondmachine A has made a complete cut across the longwall face 15, the firstmachine will be again started across the longwall face 14, and thesecond machine, the dra conveyer 17 and cribs 19 will be repositionewhile the first machine is making its second cut.

The machines A will thus be alternately operated and a steady output ofcoal maintained.

If for any reason,one machine should fail to proceed as fast as theother, as for instance, due to breakdowns or the like, it will notinterfere with the operation of the other machine, since due to thesacrifice barrier 7, each longwall face is independent of the other.

The machines A used in carrying out the method of this invention,comprise a main frame 20 having a three-point suspension or supportcomposed of a large roller 21 journa ed on an axle 22 supported by ribs23 of the main frame and adapted to ride on the mine floor, and a pairof flanged or grooved rollers 24 journaled on stub axles 25 fixedlymounted in the side wall of the main frame 20 and adapted to be engagedon and ride on the forward flange of the channel body of the dragconveyer. The rollers 24 serve to support and guide the machine andprevent twistmg, and the three-point support combines to distribute theload and eliminate tilting and cramping of the machine.

The forward end of the main frame 20 is in the form of an elevatedplatform 26 and forms the base or pan for a transverse drag conveyer fortransporting or conveying the mined coal across the machine onto thedrag 'conveyers 16 and 17 in the headings or spaces 8. A wear plate 27is mounted on the top of the platform 26, and shafts 28 and 29 arejournaled in suitable bearings at the opposite ends of the platform.Idler sprockets 30 are mounted on the shaft 28, .while the shaft 29 isthe power or head shaft and carries the head or power sprockets 31.Suitable conveyer chains 32 are trained over the sprockets 30 and 31 andhave drag bars 33 secured thereto for dragging or conveying the coalalong t-heplatform 26. The rear or head end of the platform 26 iselevated or inclined so as to deliver the coal onto the conveyors 16 and17.

The head shaft 29 receives its power from a motor 35 which has itsarmature shaft 36 connected by gears 37 and 38 to a power shaft 39,which shaft carries a sprocket 40 connected by a chain 41 to a sprocket42 on a drive shaft 43. A vertical shaft 44 is journaled in the frame 20and is connected to the shaft 43 b miter gears 45 and 46, and to thehead sha t 29 by miter gears 47 and 48.

The forward end of the platform 26 terminates in an inclined portion 49and supports a platform conveyer portion 50 which is rigid- 1y securedthereto and is composed of top and bottom plates 51 and 52 connected andheld in spaced relation by cutter chain guides 53 and 54 along eachlongitudinal edge.

A pair of idler sprockets 55 and 56 are journaled on short shafts 57 and58 between the plates 51 and 52 at one end of the member 50, and a heador power sprocket 59 is journaled on a shaft 60 at the other end of themember 50.

A cutter chain 61, carrying cutter bits 62,

istrained around the sprockets 55, 56 and 59 and in the guides 53 and54, and is adapted to be operated to undercut and form a kerf in thecoal to be mined.

The head sprocket 59 has'an internal gear 63 formed integral therewith,(see Figure 10) which is in mesh with a pinion 64 on a shaft 65journaled in the platform conveyer 50. The shaft 65 carries a miter gear66 which is in mesh with a miter gear 67 on the shaft 39. I

The coal being mined after being undercut by the cutter chain 61 isbroken down by a plurality of picking bars (to be described) and fallsonto the platform conveyer portion 50. As the machine is advanced thebroken down coal will be pushed over or across the portion 50 and upover the inclined portion 49 onto the drag conveyer platform or, pan 26where it will be engaged by the drag bars 33 and moved transversely ontothe drag conveyer in the headings 8.

The machine A is adapted to be fed toward or into the material to bemined by an anchored feed chain 68 which is anchored to suitable anchorsof any well-known type (not shown), and is meshed with a feedwheel 69keyed to a shaft 70 journaled in a bearing 71 integral with the frame20. A guide-wheel 72 is keyed to a stud shaft or pin 73 journaled in theframe 20'and the chain 68 is trained over the guide-wheel 72 to hold thechain in engagement or mesh with mesh with pinions the feed-wheel 69.The shaft 7 0 carries a worm-wheel 7 4 which is in mesh with a wormloosely mounted on a shaft 7 6, which shaft is connected by gears 78with the drive shaft A slip clutch 'T 9 is provided on the shaft 76 forconnecting the worm 7 5 therewith to drive the machine.

A pair of spaced upright supporting brackets or bearings 80 and 81. aremounted on the frame 20 and a pair of horizontal shafts 82 and 83 arejournaled thereini- A pair of carriage guide members 84 and 85 arepivotally mounted at their forward ends on the shaft 82, and a pair ofarms 86 and 87 are keyed at their forward ends to the shaft 83 and havetheir rear ends connected by links 88 and 89. respectively, to therespective carriage guides 84 and 85, so that rotation of the shaft 83will cause a swingingmovement of the carriage guides 84 and 85 about theshaft 82.

The guides 84 and 85 are provided with rollers 90 and 91, respectively,on which the ram bars 92 and 93 forming the sides of the carriage, aremounted. The ram bars 92 and 93 are tied together to complete thecarriage by a base plate 94, and cross members 95 an 96. The rain bars92 and 93 are adapted to reciprocate on the rollers 90 and 91 and areprovided with rack portions 97 which are in 98 keyed to the shaft 82.The shaft 82 is provided with a pinion 99 which meshes with an idlerpinion 100 on the shaft 83, which in turn is in mesh with a gear 101 ona stub shaft 102 journaled in the main frame. Gear 101 meshes withapinion 103 on a stub shaft 104, which also carries a gear 105 which ismeshed with a pinion 106 on the armature shaft 107 of a torque motor108. From the above it will be readily seen that operation of the motor108 will feed thecarria e forwardly under a constant torque.

he carriage ram bars 92 and 93 are provided with shock absorbers at eachend to limit the travel of the carriage in both directions, whichcomprise a stop member 109 tapped for the reception of threaded bolts110 which are inserted through compression springslll, which are seatedagainst the ends of the bars 92 and 93. The stop members 109 projectbeyond the sides of the bars 92 and 93 and are adapted to engage theguides 84 and 85 to limit the movement of the carriage.

The carriage and carriage guides are adapted to be rocked about theshaft 82 by the operation of the shaft 83, which shaft is rocked bymeans of power transmitted through a gear meshed with a gear 116 on ashaft 117. The shaft 117 carries a worm-quadrant 118 which is meshedwith a worm 119 on a shaft 120, which shaft also carries a hand wheel121 by which the shaft may be rotated by the operator. I

The weight of the carriage is so distributed that when it is in itsbackward position, the

d der 130, so that the center of gravity is on or near its axis, whichmakes it possible to lower or elevate the carriage (piickly with littleeffort.

A p urality of mechanical hammers or pickingbars 122 and an anger 123are arranged pai'allel in a horizontal plane on the tilting and movablecarriage above described.

The mechanical hammers or picking bars each comprise a housing 124 fixedto the above described carriage, a pick shank 125 reciprooably mountedin said housing and provided with a guide collar 126 abutting a shoulder127. The pickshank 125 is splined at I 125 to the housing to preventrotation.

pick bit 128 having a wedge-shaped end 128 is secured to theforward endof the shank 125 by a threaded pin 129. A cylinder 130 is reciprocablymounted in-the rear end of the housing 124 and provided with a camreceiving recess 131. A helve orhammer 132 is reciprocably mounted inthe cylinder 130 and is positioned between springs 133 and 134. The rearend of the hammer 132 is recessed to receive one end of the coiledspring 133, and the other end of the spring is positioned over a guideprotuberance 135 on the cylinspring 133 is compf'essed at each backwardstroke of the hammer 132. A guide bushing 136 is threaded in the forwardend of the cylinder 130 and the rear end of the hammer 132 is providedwith a flange 137 so as to guide the hammer within the cylinder, and thespring 134 is mounted between the bushing 136 and the flange 137. sothat it is compressed 'on each forward stroke of the hammer 132.

The forward end of the pick shank 125 is guided by a bushing 138. Acoiled spring 139 is mounted around the pick shank 125 between thecollar 126 and a shoulder 140 of the housing and is adapted to absorbthe initial thrust of the pick against the coal face. A stop iece 141extends between the collar 126 and shoulder 140 so as to limit themovement of the shank 125. i

A second coiled spring 142 is mounted around the shank 125 collar 126and a washer 143' bearing against the forward end of the housing andserves to absorb the unspent force of the shank.

At the extreme left end of the row of hamand extends between the here122 is mounted the auger 123 which comprises a housing 145 fixed .to themovable carriage and having a hollow shaft 146 journaled therein. Theforward end of the shaft. 146 is machined to form a hexagon recess 147to receive the hexagon end 148 of an auger shank 149 journaled at 150and 151 in the housing 145. The end 148 of the shank 149 is materiallyshorter than the recess 147 so as to permit a longitudinal movement ofthe auger shank. An auger 152 is secured to the free forward end oftheshank 149 by a threaded pin 153. A mounted in the hollow shaft 146 andbears coiled spring 154 is against the rear end of the auger shank 149permit the auger shear off any projecting trate with. greater rapiditythan t so as to nor 1 the pressure of the spring if the e auger. Theauger 123 is ada ted to bore a relief hole in the coal face to relievethe extremeleft picking bar and aid in separating the coal along thelongwall face. above function, the auger servesto break or points .ofthecoal remaining on the longwall face after the pick- I ing bars havebroken down the coal. The

auger 123 has a fixed position relative to the longwall face and,therefore, when the earriage is rocked'vertically about the shaft 83 toreposition the picking bars and auger, the auger will strike andshearoif'any projecting points so as to form a smooth longwall ace. Y

The hammers or picking bars 122 are adapted to be operated by cams 155formed integral with cam shafts 156 and 156* journaled in bearings 157in the picking bar housings 124. The cams 155 are adapted to engage thewalls ofthe cam recesses 131 in the cylinders l30 of the picking barsand reciprocate the cylinders.

The cam shaft 156' has a miter on its one end which meshes with gear 159on the rear end of the hollow shaft 146 of the auger 123, so that as thecam shaft 156 is rotated the auger 123 will be operated.

gear 158 a miter Each of the shafts 156 and 156' is pro vided with amiter gear 160, which gears are in mesh with'a miter gear 161 on a shaftI 162 journaled on the carriage. The shaft 162 carries a gear 163 inmesh with a gear 164 on a shaft 165' journaled on the carriage, whichshaft has a beveled-or miter gear 166 splined thereon so as to permitthe shaft to move relative thereto. The gear 166 is meshed with a gear167 on a shaft 168 journaled in a frame 169. The shaft 168 carries agear 167 which is in mesh with a gear 169 closely mounted on. the shaft82 and in mesh with a gear 170 loosely mounted on the shaft 83. 'Thegear 170 is meshed with a gear 171 on a shaft 172, which shaft carries agear 173 which is meshed with a gear 174 on the drive shaft 43. f

In operation, the torque motor feeds the carriage, carrying the pickingbars 122 and auger 123 forward toward the coal face to be mined, so asto thrust the pick bits 128 against the face compressing the springs139. The cam shafts 156 and 156 being constantly rotating, the cams 155will engage and reciprocate the cylinders 130, which impart a rethehammers 132 ciprocatory movement to and 134, which force the augershankand auger forward into the coal face," and also to move rearwardlyagainst picks pene-,

. pression of the In addition to the hammers at the the pick bits intothe coal. The springs 139 also serve to keep the pick bits seated in thecoal after penetration. If, for any'reason, from the effect springs 139drive of the hammer blow, comof the cam 155 the remaining picking barshave effected etration, and the expansion of their s rin s 139 has takenplace a cumulative effect 1s had on the picking b penetrate wherebythe'bar will be forced to penetrate.

- The cams 155 are spaced circumferentially around the shafts 156 and156 so that only one of the cams is engaged at its working. point withthe pick cylinder 130 at a time, so

that the into the coal face.

A machine as described above isparticular'ly adapted for carrying outthe method of longwall mining described in the forepart of thisspecification, whereby the coal is mined over a short-wall faceextending at ri ht angles to the. longwall face to be workedfby coal,trimming the and simultaneously I claim: 7 v 1. A mining machine for alongwall system of mining, comprising in combination, a rigid framedwith the longwall face to be mined, a combined undercutting, breakingdown and loading machine'extending at right angles to and at leastpartly supported on and adapted to travel longitudinally of saidconveyer, said machine comprising a main frame, porting roller journaledon said frame and adapted to ride over the mine floor, flanged rollersjournaled on said frame and supported on said conveyer, power means formoving said-machine into the coal to be mined, undercutting meanscarriedv by said frame, and power operated pick mechanism carried bysaid frame for breaking down the undercut coal. 2. A mining machine fora longwall system of mining, rigid framed conveyer extending parallelwith the longwall face to be mined, a comsuccessive longwall face,

bined undercutting, breaking down and loadporting roller journaled onsaid frame and the pick bits fail to penetrate arwhich has failed topicking bars are successively thrust.

loading the mined coal.-

sup-

spring 133 permits rotation of that picking bar. After 'oo 1undercutting, breaking down the undercut conveyer extending parallel I asupcom risin in combination aadapted to ride over the mine floor,flanged rollers journaled onsaid frame and sup- *1 ported on saidconveyer, power meansfor moving said machine into the coai'to be mined,undercutting means carried by said frame, power operated pick mechanismcarried by said frame for breaking down the undercut coal, and aconveyer on said maward side of said frame for undercutting the coal tobe mined, a conveyer mounted to the rear of and extending parallel withsaid outter chain, means for moving said machine into the coal to bemined, a carriage moun ed for vertical swinging movement on s id. frame,a plurality of picking bars mounted on said carriage, means for movingsaid'carriage forward under a constant pressure to force said barsagainst the coal face to be mined, and means for exerting a series ofrapid blows against said bars to drive said bars intothe coal to bemined.

4. In a mining machine having a main frame and means on said frame forundercutting the material to be mined, a carriage mounted for verticalswinging movement relative to said main frame, a plurality of pickingbars mounted on said earriage, an auger mounted at one end of saidcarriage, means for moving said carriage forward under aconstant torqueto force said bars and auger against the material being mined, means forrotating said auger, and means for exerting a series of rapid blowsagainst said picking bars to drive said bars 1nto the material to bemined.

5. In a. mining machine having a main frame and means on said frame forundercutting the material to be mined, a carriage mounted for verticalswinging movement relative to said main frame, a plurality of pickingbars mounted on said carriage, an

auger mounted at one end of said carriage, a constant torque motorhaving a geared connection with said carriage for moving said carriageforward under a constant torque to force said bars and auger against thematerial being mined, means for rotating said auger, and means forexerting a series of rapid blows against said picking bars to drive saidbars into the material to be mined. 6. In a mining machine having a mainframe and means on said frame for undercutting the material to be mined,a carriage mounted for vertical swingin movement relative to said mainframe, a pl ur'ality of picking bars mounted on said carriage, aconstant torque motor having a geared connection with said carriage formoving said earriage forward under a constant torque to force said barsagainst the material being mined,'and means for exerting a series ofrapid blows against said bars to drive said bars into the material to bemined.

- 7. In a mining machine having a main frame and means on said mainframe for undercutting the material to be mined, a carriage mounted forvertical swinging move- I'nent relative to .said main frame, a pluralityof picking bars arranged in a single transverse row on said carriage, ananger mounted on said carriage at the extreme inner end of said row ofpicking bars, means for moving said carriage forward to force saidpicking bars and auger against the.

material bein mined under 'a constant torque, means for exerting aseries of rapid blows against said picking bars to force said bars intothe material being mined, said means being adapted to strike blowsagainst single ones of said bars successively from one end of the row ofbars to the other, and means for rotating said auger to cause said augerto penetrate the material. to be mined, said auger being adapted toshear the face at the side of said machine when said carriage is rocked.

8. In a mining machine having a main frame and means on said main framefor undercutting the material to be mined, a carriage mounted forvertical swinging movement relative to said main frame, a plurality ofpicking bars arranged in a single transverse row on said carriage, meansfor moving said carriage forward to force said picking bars against thematerial being mined under a constant torque, each of said picking barscomprising a bit shank mounted for re ciprocatory movement on saidcarriage, a bit secured to said shank, a collar on said shank, a coiledspring mounted around said shank and engaged between said collar and aportion of said carriage, a housing on said carriage to the rear of saidshank, a cylinder mounted for reciprocation in said housing, a hammermember mounted for reciprocatory movement in said cylinder, a secondcoiled spring arranged between the rear end of said cylinder and theforward end of said hammer, a third coiled spring arranged between theforward end of said cylinder and the rear end of said hammer, anoperating shaft for all of said picking bars, said shaft having aplurality carriage mounted for vertical swinging said main frame, a

movement relative to plurality of picking bars arranged in a singletransverse row on said carriage, each of said picking bars comprising abit shank mounted for reciprocatory movement on said carriage, a bitsecured to said shank, a collar on said shank, a coiled spring mountedaround said shank and engaged between said collar and a portion of saidcarriage, a housing on said carriag; to-the rear of said shank, acylinder mounte housing, a hammer member mounted for reciprocatorymovement in said cylinder, a

second coiledspring arranged between the rear end of said cylinder andthe forward end of said hammer, a third coiled sprin arranged betweenthe forward end of sai .cylinder and the rear end of said hammer, meansfor moving said carriage forward under a constant torque so as to forcesaid picking bars into the coal being mined and compressing said firstnamed s rings, an operating shaft for all of said pic ing bars, saidshaft having a plurality of cams thereon, one for each of sad bars, saidcamsbeing adapted toengage the rear ends of cylinders of said pickingbars andto force said cylinders forward so as to compress said secondnamed springs and reciprocate said hammers so that said hammers willstrike said bit shanks, said last named springs adding impetus to saidhammers, and said first named springs assisting in forcing said bitsinto the coal, and means for operating said shaft.

10. In a mining machine having a main.

frame, a carriage mounted for vertical swinging movement relative tosaid main frame, a plurality of picking bars mounted on said carriage,at least one an er mounted adqaccnt at least one end of sai carriage,means for moving said carriage forward under a. confor reciprocation insaid.

stant torque to force said bars and anger" against the material beingmined, means rotating said auger, and means for exerting a series ofrapid blows against said picking bars to drive said bars into thematerial to be mined.

11. In a mining machine. having a main frame, a carriage mounted forvertical swinging movement relative to said main frame, a pluralityofpicking bars mounted on said carriage; means for moving saidcarriageforward under'a constant torque to force said bars against thematerial being mined, and means for exerting a series of rapid blowsagainst said picking-bars to drive said bars.

into the material to be mined.

12. In a mining machine having amain frame, a carriage mounted forvertical swinging movement relative to said main frame, a plurality ofpicking bars mounted on said carriage in asingle transverse row, meansfor moving saidcarriage forward under a constant torque to force saidpicking bars against the material to be mined, and means for exertinga'series of rapid blows against said picking .bars 'to force said barsinto the material to be mined, said means being adapted to strike blowsagainst single ones of said barssuccessively from one end of the row ofbars to the other.

In testimony whereof, I have hereunto set my hand;

' FREDERICK B. MILLER.

